Shanghai Daoqin Plastics Co., Ltd.

PE film gas property relatively large, density increase, its gas property is decline. PE film tool has anti property, wet property small. polyethylene (PE) film (PE) according to manufacturing methods and control different, can manufacturing low density, in density, high density polyethylene (PE) and crosslinked polyethylene (PE) and other different property can product.
(1) low density polyethylene (PE) (LDPE). its density is 0．92g／cm2 left right. low density polyethylene (PE) film transparent degree and hot property good, can anti water, anti 潮; resistant strong/high degree low, tensile elongation large, easy 发皱, 0．03mm below/following film, force control small, and 各处张 force need 恒定, especially is hot more easy deformation, formed sleeve/set color difficult. therefore drying 时, film surface temperature degree need high (in 550C以 inner). formed film process different, can separation is blow molding film (IPE), film (CPE), low foaming film and other types. IPE film resistant strong/high degree and property ratio CPE film good, using/adopting positive printing, can as food bag, clothing/apparel bag and other; CPE film thick degree uniform, surface gloss degree, transparent degree and hot property ratio, PE good, can positive printing, production cost high; CPE film main/primary used as composite/compounding bag inner and product, and packaging; low foaming film decoration property good, thick 实, easy tensile deformation, using/adopting positive printing, used as year 画, and bag and other.
(2) in density polyethylene (PE) (MDPE). it density in 0．93～0．94g／cm2 property can high density and low density polyethylene (PE) between.
(3) high density polyethylene (PE) (HDPE). density in 0．94—0．965g／cm2. high density polyethylene (PE) film heat resistant property, machine strong/high degree ratio low density polyethylene (PE) film good, tensile elongation small, film thick degree generally in 0.03mm above, transparent degree 差. using/adopting positive printing, main/primary used as bag, waste bag and inner bag and other.
(4) crosslinked polyethylene (PE) (CLPE). due to it relatively its it polyethylene (PE) product has more high heat resistant property, tensile strength, hot shrinkage rate and retardant property, its applications in 进一步 expand large, currently large more used as hot shrinkage packaging film use.
generally 说, density upper rise, mechanical properties and retardant property can versus improve/increase, heat resistant, good. density polyethylene (PE), due to formed film process different, it between has different property can. this is is method can fast speed cooling, crystallization degree low, transparent degree relatively high, degree small, separation 子排列 more random 则状态, therefore retardant property relatively small, rate relatively large, elongation relatively low, resistant property 差.
pa66 plastics raw materials material property PA66/A2G4/宁波威宁